21159120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{673}}^1$

素因数の和:820

約数の個数: 80

約数和(自身を含む): 66192192

約数和(自身を除く): 45033072

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 131, 240, 262, 393, 524, 655, 673, 786, 1048, 1310, 1346, 1572, 1965, 2019, 2096, 2620, 2692, 3144, 3365, 3930, 4038, 5240, 5384, 6288, 6730, 7860, 8076, 10095, 10480, 10768, 13460, 15720, 16152, 20190, 26920, 31440, 32304, 40380, 53840, 80760, 88163, 161520, 176326, 264489, 352652, 440815, 528978, 705304, 881630, 1057956, 1322445, 1410608, 1763260, 2115912, 2644890, 3526520, 4231824, 5289780, 7053040, 10579560, 21159120]

約数ペア:

[(1, 21159120), (2, 10579560), (3, 7053040), (4, 5289780), (5, 4231824), (6, 3526520), (8, 2644890), (10, 2115912), (12, 1763260), (15, 1410608), (16, 1322445), (20, 1057956), (24, 881630), (30, 705304), (40, 528978), (48, 440815), (60, 352652), (80, 264489), (120, 176326), (131, 161520), (240, 88163), (262, 80760), (393, 53840), (524, 40380), (655, 32304), (673, 31440), (786, 26920), (1048, 20190), (1310, 16152), (1346, 15720), (1572, 13460), (1965, 10768), (2019, 10480), (2096, 10095), (2620, 8076), (2692, 7860), (3144, 6730), (3365, 6288), (3930, 5384), (4038, 5240)]